20344102111 has 2 divisors, whose sum is σ = 20344102112. Its totient is φ = 20344102110.

The previous prime is 20344102087. The next prime is 20344102153. The reversal of 20344102111 is 11120144302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20344102111 - 2⁷ = 20344101983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20344102171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172051055 + 10172051056.

It is an arithmetic number, because the mean of its divisors is an integer number (10172051056).

Almost surely, 2^20344102111 is an apocalyptic number.

20344102111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344102111 is an equidigital number, since it uses as much as digits as its factorization.

20344102111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20344102111 its reverse (11120144302), we get a palindrome (31464246413).

The spelling of 20344102111 in words is "twenty billion, three hundred forty-four million, one hundred two thousand, one hundred eleven".